Recently we created a special stone and called it “CATARACT”. Its production process is slightly different: after being baked a first time, the hollow bricks are put into the oven a second time. By reducing the oxygen in the oven, the hollow bricks turn grey and black: a very modern and sexy aspect. “Normal” hollow bricks are plastered very often, but these CATARACT stone can be used without any finishing. This fits into our philosophy of circular economy: reducing materials (no finishing with plaster), giving materials a second chance to be re-used by making them sexy enough.